To address the issue of Warpath: Ace Shooter crashing on your iPad running iOS 9, here are step-by-step solutions that you can try:

1. Update the Game: Confirm that you have the latest version of Warpath: Ace Shooter installed. Open the App Store, go to the Updates tab, and check if an update is available for the game. If so, update it as developers often release fixes for bugs and performance issues.

2. Restart Your iPad: A simple restart can resolve many crashing issues. To restart your iPad, press and hold the power button until the slider appears, then slide to power off. Once powered off, press and hold the power button again until you see the Apple logo.

3. Free Up Storage: Ensure there is enough free storage on your iPad since low storage can lead to crashing. Go to Settings > General > iPad Storage. If your available storage is low, consider deleting any unused apps or files.

4. Reinstall the Game: If the above steps don't work, reinstalling the game might help. Delete the game by pressing and holding its icon until it jiggles, then tap the ‘X’ to delete it. After it's uninstalled, go to the App Store and download it again.

5. Check Background Apps: Running multiple apps in the background may cause interference. Double-tap the Home button or swipe up from the bottom of the screen (depending on your model) to access the app switcher. Swipe up to close unnecessary apps running in the background.

6. Reset Settings: If crashes persist, you can reset your settings. Navigate to Settings > General > Reset > Reset All Settings. This will reset system settings to defaults but will not erase your data.

7. Check Forums and Support: Issues with Warpath: Ace Shooter are reported by multiple users. Visiting online forums like Reddit or support communities may provide additional solutions or updates from developers regarding any known issues. For reference, similar crashes have been discussed on various platforms such as the Apple Support Community and GitHub - learn more - learn more.

8. Contact Support: If none of the above solutions work, consider reaching out to the game's support for help. Reporting the crashes can assist them in identifying and fixing any bugs specific to certain devices or iOS versions.

Following these steps should help mitigate the crashing issues you’re experiencing with Warpath: Ace Shooter on your iPad running iOS 9.